//枚举迭代字典
 1  NSMutableDictionary *dict = [NSMutableDictionary dictionary];
 2     [dict setObject:@"arr1" forKey:@"1"];
 3     [dict setObject:@"arr2" forKey:@"2"];
 4     [dict setObject:@"arr3" forKey:@"3"];
 5     [dict setObject:@"arr4" forKey:@"4"];
 6     [dict setObject:@"arr5" forKey:@"5"];
 7     
 8     [dict enumerateKeysAndObjectsUsingBlock:^(NSString* key, NSDictionary * obj, BOOL *stop) {
 9 
10   NSLog(@"Key:Obj = %@:%@", key, obj);
11 
12 }];

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